Down and out in Paris: How Serena Williams regained her mojo

Serena's golden year – Serena Williams poses with her coach Patrick Mouratoglou after reclaiming the year-end world No. 1 ranking she last held in 2009.

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Serena's golden year11 photos

Best season – The American enjoyed her best year in 2013, capped with a successful defense of her season-ending WTA Championships crown. She won 11 titles, including the French and U.S. Open trophies, and finished the year with 78 wins and just four defeats.

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Serena's golden year11 photos

Roast Turkey – Serena became the oldest WTA Championships winner by beating Li Na in the Istanbul final and amassed $12.3 million over the season. She became the first player to win 11 titles in a year since Martina Hingis bagged 12 in 1997.

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Serena's golden year11 photos

Injury woes – It marked a sensation return to form for Serena, who had tumbled to 175 in the world after a couple of injury-blighted seasons. After surviving a life-threatening blood clot, and coming back from a serious foot injury, she began a long journey to get back to the top of the rankings.

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Pain in Paris – One of the lowest moments of Serena's career came with a first round defeat to unseeded opponent Virginie Razzano at the French Open in 2012. It led many to wonder whether she could recapture the glorious heights of yesteryear.

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New coach – While still in Paris, Serena sought out coach Patrick Mouratoglou for help with her game. The results were immediate, Williams going on to win Wimbledon, two Olympic gold medals, the U.S. Open and the WTA Championships.

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Mour to follow – Mouratoglou, with whom Serena has been romantically linked, helped Serena win 16 titles in 16 months, with a record of 95 victories and five defeats. He told CNN of that meeting in Paris: "What surprised me at that point was the motivation she had. She really was prepared to do anything to come back to the top."

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Serena's golden year11 photos

Clay court champion – Twelve months on from that shock defeat in the first round, Serena banished her demons by winning her second French Open title, and her first since 2002, after beating defending champion Maria Sharapova.

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Fairytale of New York – Despite a fourth round exit to Sabine Lisicki at Wimbledon, Serena's dominance was restored in New York as she took the U.S. Open title.

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Eyes on the prize – Williams is now just one grand slam title behind the 18 won by Chris Evert and Martina Navratilova.

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Record-breaking 2014? – Despite having her most successful year, Mouratoglou thinks Serena can improve yet further. "If she plays her type of game with more efficiency, like being maybe even more aggressive, adding some volleys, she can give another level, which is maybe a bit frightening, but I think she can."

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Story highlights

Serena Williams has had a resurgence under Patrick Mouratoglou's guidance

American had sunk to 175 in world and lost in 2012 French Open first round

But with French coach's input Williams won final two grand slams last year

World No. 1 won 11 titles in 2013, the best return since Martina Hingis in 1997

It was, the premature obituaries proclaimed, the beginning of the end for Serena Williams.

The indomitable figurehead of women's tennis had been humiliated and cowed -- turfed out of the 2012 French Open in the first round by an unheralded and unseeded opponent.

After an injury-blighted few seasons that saw her sink to 175 in the world rankings, Williams had hit one of the biggest troughs in her career.

Given all she had achieved, it would have been easy to throw in the towel -- but even at her lowest ebb, Serena's desire to clamber back to the top was insatiable.

"She's a real champion. It's not about the strokes, it's about what you have inside -- and she has something really special inside. The quality of the game she is able to play at her age shows how much her game has evolved from most of the players.

"I think she improved in many ways her movement on the court; she moves much better, she moves longer also, she can play longer rallies, much longer if she needs to.

"I think she added some shots to her game that she was not using that much before. She wasn't using them because she wasn't mastering them like some other shots she masters like nobody else on tour.

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"I think that's a key thing -- the more options she gets on tour in her game, the more chances to win she has on the first day of the year against the player who plays the best tennis of her career.

"If she plays her type of game with more efficiency, like being maybe even more aggressive, adding some volleys, some swing volleys for example, she can give another level, which is maybe a bit frightening, but I think she can."

Mouratoglou's influence has clearly galvanized Williams, but he insists it is her desire to take responsibility that makes her so unique.

Whereas others might look in desperation to their coach for help if a match is getting away from them, Serena grits her teeth and figures it out for herself.

"She has this ability to find a solution to win, she refuses to lose and this is something really interesting," he said. "Most of the players when they are in trouble, or they are struggling, they are complaining.

"She shouldn't think, 'I have to rely on someone' to find the solution,' because she has the solution within herself. She just has to analyze, think, and dig deep and find.

"Some (players) just complain and get angry, or give up -- that's the case of many players. And some others call their coach whenever they get broken: 'Oh, I need my coach!'

"Come on, you don't need your coach every time you're broken. You have to think what you should do and look for a solution, and this is something that Serena really has in herself."

So, with Serena in supreme form, is it conceivable she could smash all records in 2014 and win all four slams -- something not done since Steffi Graf in 1988? "Yes, I think everything is possible," Mouratoglou says.

"Is it going to be easy? No, it's not going to be easy, because in terms of focus it's something really tough to achieve, and also we have to respect the quality of the other players."